Also, HOW DO I GET BETA 6 BACK. I deleted the installer once the RC came out. Somebody PM me if you could. I'd love to play with this.
One workaround is to autohide the OSX dock, and define a custom resolution in Parallels with 44 fewer vertical pixels (for example, 1440x856 on a 15.4" MBP). Turn off Parallel's staus bar and tool bar, and the window fits nicely right under the Apple menu. It ALMOST feels like full screen, and it tides me over until the fix is in.